Magnesium sources

A 2003 study found patients with low magnesium during the first eight days after coronary artery bypass graft surgery (CABG) to be twice as likely to have a heart attack or die within the first year post-surgery.

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Thiamin (B1)

Thiamin deficiency tends to be higher in patients using diuretics due to the water-soluble B-vitamin being excreted in the urine.